2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
21 #include <sys/types.h>
22 #include <netinet/in.h>
27 #include "openvswitch/types.h"
34 /* Datapath packet metadata */
36 uint32_t recirc_id
; /* Recirculation id carried with the
37 recirculating packets. 0 for packets
38 received from the wire. */
39 uint32_t dp_hash
; /* hash value computed by the recirculation
41 struct flow_tnl tunnel
; /* Encapsulating tunnel parameters. */
42 uint32_t skb_priority
; /* Packet priority for QoS. */
43 uint32_t pkt_mark
; /* Packet mark. */
44 union flow_in_port in_port
; /* Input port. */
47 #define PKT_METADATA_INITIALIZER(PORT) \
48 (struct pkt_metadata){ 0, 0, { 0, 0, 0, 0, 0, 0}, 0, 0, {(PORT)} }
50 static inline struct pkt_metadata
51 pkt_metadata_from_flow(const struct flow
*flow
)
53 struct pkt_metadata md
;
55 md
.recirc_id
= flow
->recirc_id
;
56 md
.dp_hash
= flow
->dp_hash
;
57 md
.tunnel
= flow
->tunnel
;
58 md
.skb_priority
= flow
->skb_priority
;
59 md
.pkt_mark
= flow
->pkt_mark
;
60 md
.in_port
= flow
->in_port
;
65 bool dpid_from_string(const char *s
, uint64_t *dpidp
);
67 #define ETH_ADDR_LEN 6
69 static const uint8_t eth_addr_broadcast
[ETH_ADDR_LEN
] OVS_UNUSED
70 = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
72 static const uint8_t eth_addr_stp
[ETH_ADDR_LEN
] OVS_UNUSED
73 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 };
75 static const uint8_t eth_addr_lacp
[ETH_ADDR_LEN
] OVS_UNUSED
76 = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 };
78 static const uint8_t eth_addr_bfd
[ETH_ADDR_LEN
] OVS_UNUSED
79 = { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 };
81 static inline bool eth_addr_is_broadcast(const uint8_t ea
[6])
83 return (ea
[0] & ea
[1] & ea
[2] & ea
[3] & ea
[4] & ea
[5]) == 0xff;
86 static inline bool eth_addr_is_multicast(const uint8_t ea
[6])
90 static inline bool eth_addr_is_local(const uint8_t ea
[6])
92 /* Local if it is either a locally administered address or a Nicira random
95 || (ea
[0] == 0x00 && ea
[1] == 0x23 && ea
[2] == 0x20 && ea
[3] & 0x80);
97 static inline bool eth_addr_is_zero(const uint8_t ea
[6])
99 return !(ea
[0] | ea
[1] | ea
[2] | ea
[3] | ea
[4] | ea
[5]);
102 static inline int eth_mask_is_exact(const uint8_t ea
[ETH_ADDR_LEN
])
104 return (ea
[0] & ea
[1] & ea
[2] & ea
[3] & ea
[4] & ea
[5]) == 0xff;
107 static inline int eth_addr_compare_3way(const uint8_t a
[ETH_ADDR_LEN
],
108 const uint8_t b
[ETH_ADDR_LEN
])
110 return memcmp(a
, b
, ETH_ADDR_LEN
);
112 static inline bool eth_addr_equals(const uint8_t a
[ETH_ADDR_LEN
],
113 const uint8_t b
[ETH_ADDR_LEN
])
115 return !eth_addr_compare_3way(a
, b
);
117 static inline bool eth_addr_equal_except(const uint8_t a
[ETH_ADDR_LEN
],
118 const uint8_t b
[ETH_ADDR_LEN
],
119 const uint8_t mask
[ETH_ADDR_LEN
])
121 return !(((a
[0] ^ b
[0]) & mask
[0])
122 || ((a
[1] ^ b
[1]) & mask
[1])
123 || ((a
[2] ^ b
[2]) & mask
[2])
124 || ((a
[3] ^ b
[3]) & mask
[3])
125 || ((a
[4] ^ b
[4]) & mask
[4])
126 || ((a
[5] ^ b
[5]) & mask
[5]));
128 static inline uint64_t eth_addr_to_uint64(const uint8_t ea
[ETH_ADDR_LEN
])
130 return (((uint64_t) ea
[0] << 40)
131 | ((uint64_t) ea
[1] << 32)
132 | ((uint64_t) ea
[2] << 24)
133 | ((uint64_t) ea
[3] << 16)
134 | ((uint64_t) ea
[4] << 8)
137 static inline void eth_addr_from_uint64(uint64_t x
, uint8_t ea
[ETH_ADDR_LEN
])
146 static inline void eth_addr_mark_random(uint8_t ea
[ETH_ADDR_LEN
])
148 ea
[0] &= ~1; /* Unicast. */
149 ea
[0] |= 2; /* Private. */
151 static inline void eth_addr_random(uint8_t ea
[ETH_ADDR_LEN
])
153 random_bytes(ea
, ETH_ADDR_LEN
);
154 eth_addr_mark_random(ea
);
156 static inline void eth_addr_nicira_random(uint8_t ea
[ETH_ADDR_LEN
])
160 /* Set the OUI to the Nicira one. */
165 /* Set the top bit to indicate random Nicira address. */
169 bool eth_addr_is_reserved(const uint8_t ea
[ETH_ADDR_LEN
]);
170 bool eth_addr_from_string(const char *, uint8_t ea
[ETH_ADDR_LEN
]);
172 void compose_rarp(struct ofpbuf
*, const uint8_t eth_src
[ETH_ADDR_LEN
]);
174 void eth_push_vlan(struct ofpbuf
*, ovs_be16 tpid
, ovs_be16 tci
);
175 void eth_pop_vlan(struct ofpbuf
*);
177 const char *eth_from_hex(const char *hex
, struct ofpbuf
**packetp
);
178 void eth_format_masked(const uint8_t eth
[ETH_ADDR_LEN
],
179 const uint8_t mask
[ETH_ADDR_LEN
], struct ds
*s
);
180 void eth_addr_bitand(const uint8_t src
[ETH_ADDR_LEN
],
181 const uint8_t mask
[ETH_ADDR_LEN
],
182 uint8_t dst
[ETH_ADDR_LEN
]);
184 void set_mpls_lse(struct ofpbuf
*, ovs_be32 label
);
185 void push_mpls(struct ofpbuf
*packet
, ovs_be16 ethtype
, ovs_be32 lse
);
186 void pop_mpls(struct ofpbuf
*, ovs_be16 ethtype
);
188 void set_mpls_lse_ttl(ovs_be32
*lse
, uint8_t ttl
);
189 void set_mpls_lse_tc(ovs_be32
*lse
, uint8_t tc
);
190 void set_mpls_lse_label(ovs_be32
*lse
, ovs_be32 label
);
191 void set_mpls_lse_bos(ovs_be32
*lse
, uint8_t bos
);
192 ovs_be32
set_mpls_lse_values(uint8_t ttl
, uint8_t tc
, uint8_t bos
,
197 * uint8_t mac[ETH_ADDR_LEN];
199 * printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac));
202 #define ETH_ADDR_FMT \
203 "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
204 #define ETH_ADDR_ARGS(ea) \
205 (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]
209 * char *string = "1 00:11:22:33:44:55 2";
210 * uint8_t mac[ETH_ADDR_LEN];
213 * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d",
214 * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) {
218 #define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8
219 #define ETH_ADDR_SCAN_ARGS(ea) \
220 &(ea)[0], &(ea)[1], &(ea)[2], &(ea)[3], &(ea)[4], &(ea)[5]
222 #define ETH_TYPE_IP 0x0800
223 #define ETH_TYPE_ARP 0x0806
224 #define ETH_TYPE_VLAN_8021Q 0x8100
225 #define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
226 #define ETH_TYPE_VLAN_8021AD 0x88a8
227 #define ETH_TYPE_IPV6 0x86dd
228 #define ETH_TYPE_LACP 0x8809
229 #define ETH_TYPE_RARP 0x8035
230 #define ETH_TYPE_MPLS 0x8847
231 #define ETH_TYPE_MPLS_MCAST 0x8848
233 static inline bool eth_type_mpls(ovs_be16 eth_type
)
235 return eth_type
== htons(ETH_TYPE_MPLS
) ||
236 eth_type
== htons(ETH_TYPE_MPLS_MCAST
);
239 /* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
241 #define ETH_TYPE_MIN 0x600
243 #define ETH_HEADER_LEN 14
244 #define ETH_PAYLOAD_MIN 46
245 #define ETH_PAYLOAD_MAX 1500
246 #define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN)
247 #define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX)
248 #define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX)
251 uint8_t eth_dst
[ETH_ADDR_LEN
];
252 uint8_t eth_src
[ETH_ADDR_LEN
];
255 BUILD_ASSERT_DECL(ETH_HEADER_LEN
== sizeof(struct eth_header
));
257 #define LLC_DSAP_SNAP 0xaa
258 #define LLC_SSAP_SNAP 0xaa
259 #define LLC_CNTL_SNAP 3
261 #define LLC_HEADER_LEN 3
268 BUILD_ASSERT_DECL(LLC_HEADER_LEN
== sizeof(struct llc_header
));
270 #define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so
271 sizeof(SNAP_ORG_ETHERNET) == 3. */
272 #define SNAP_HEADER_LEN 5
278 BUILD_ASSERT_DECL(SNAP_HEADER_LEN
== sizeof(struct snap_header
));
280 #define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN)
282 struct llc_snap_header
{
283 struct llc_header llc
;
284 struct snap_header snap
;
286 BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN
== sizeof(struct llc_snap_header
));
288 #define VLAN_VID_MASK 0x0fff
289 #define VLAN_VID_SHIFT 0
291 #define VLAN_PCP_MASK 0xe000
292 #define VLAN_PCP_SHIFT 13
294 #define VLAN_CFI 0x1000
295 #define VLAN_CFI_SHIFT 12
297 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
298 * returns the VLAN ID in host byte order. */
299 static inline uint16_t
300 vlan_tci_to_vid(ovs_be16 vlan_tci
)
302 return (ntohs(vlan_tci
) & VLAN_VID_MASK
) >> VLAN_VID_SHIFT
;
305 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
306 * returns the priority code point (PCP) in host byte order. */
308 vlan_tci_to_pcp(ovs_be16 vlan_tci
)
310 return (ntohs(vlan_tci
) & VLAN_PCP_MASK
) >> VLAN_PCP_SHIFT
;
313 /* Given the vlan_tci field from an 802.1Q header, in network byte order,
314 * returns the Canonical Format Indicator (CFI). */
316 vlan_tci_to_cfi(ovs_be16 vlan_tci
)
318 return (vlan_tci
& htons(VLAN_CFI
)) != 0;
321 #define VLAN_HEADER_LEN 4
323 ovs_be16 vlan_tci
; /* Lowest 12 bits are VLAN ID. */
324 ovs_be16 vlan_next_type
;
326 BUILD_ASSERT_DECL(VLAN_HEADER_LEN
== sizeof(struct vlan_header
));
328 #define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
330 struct vlan_eth_header
{
331 uint8_t veth_dst
[ETH_ADDR_LEN
];
332 uint8_t veth_src
[ETH_ADDR_LEN
];
333 ovs_be16 veth_type
; /* Always htons(ETH_TYPE_VLAN). */
334 ovs_be16 veth_tci
; /* Lowest 12 bits are VLAN ID. */
335 ovs_be16 veth_next_type
;
337 BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN
== sizeof(struct vlan_eth_header
));
339 /* MPLS related definitions */
340 #define MPLS_TTL_MASK 0x000000ff
341 #define MPLS_TTL_SHIFT 0
343 #define MPLS_BOS_MASK 0x00000100
344 #define MPLS_BOS_SHIFT 8
346 #define MPLS_TC_MASK 0x00000e00
347 #define MPLS_TC_SHIFT 9
349 #define MPLS_LABEL_MASK 0xfffff000
350 #define MPLS_LABEL_SHIFT 12
357 BUILD_ASSERT_DECL(MPLS_HLEN
== sizeof(struct mpls_hdr
));
359 /* Given a mpls label stack entry in network byte order
360 * return mpls label in host byte order */
361 static inline uint32_t
362 mpls_lse_to_label(ovs_be32 mpls_lse
)
364 return (ntohl(mpls_lse
) & MPLS_LABEL_MASK
) >> MPLS_LABEL_SHIFT
;
367 /* Given a mpls label stack entry in network byte order
369 static inline uint8_t
370 mpls_lse_to_tc(ovs_be32 mpls_lse
)
372 return (ntohl(mpls_lse
) & MPLS_TC_MASK
) >> MPLS_TC_SHIFT
;
375 /* Given a mpls label stack entry in network byte order
377 static inline uint8_t
378 mpls_lse_to_ttl(ovs_be32 mpls_lse
)
380 return (ntohl(mpls_lse
) & MPLS_TTL_MASK
) >> MPLS_TTL_SHIFT
;
383 /* Set TTL in mpls lse. */
385 flow_set_mpls_lse_ttl(ovs_be32
*mpls_lse
, uint8_t ttl
)
387 *mpls_lse
&= ~htonl(MPLS_TTL_MASK
);
388 *mpls_lse
|= htonl(ttl
<< MPLS_TTL_SHIFT
);
391 /* Given a mpls label stack entry in network byte order
392 * return mpls BoS bit */
393 static inline uint8_t
394 mpls_lse_to_bos(ovs_be32 mpls_lse
)
396 return (mpls_lse
& htonl(MPLS_BOS_MASK
)) != 0;
399 #define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32
400 #define IP_ARGS(ip) \
402 (ntohl(ip) >> 16) & 0xff, \
403 (ntohl(ip) >> 8) & 0xff, \
408 * char *string = "1 33.44.55.66 2";
412 * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) {
416 #define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8
417 #define IP_SCAN_ARGS(ip) \
418 ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
419 &((uint8_t *) ip)[1], \
420 &((uint8_t *) ip)[2], \
423 /* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N
424 * high-order 1-bits and 32-N low-order 0-bits. */
426 ip_is_cidr(ovs_be32 netmask
)
428 uint32_t x
= ~ntohl(netmask
);
429 return !(x
& (x
+ 1));
432 ip_is_multicast(ovs_be32 ip
)
434 return (ip
& htonl(0xf0000000)) == htonl(0xe0000000);
436 int ip_count_cidr_bits(ovs_be32 netmask
);
437 void ip_format_masked(ovs_be32 ip
, ovs_be32 mask
, struct ds
*);
439 #define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
440 #define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
441 #define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl))
444 #define IPPROTO_SCTP 132
448 #define IP_ECN_NOT_ECT 0x0
449 #define IP_ECN_ECT_1 0x01
450 #define IP_ECN_ECT_0 0x02
451 #define IP_ECN_CE 0x03
452 #define IP_ECN_MASK 0x03
453 #define IP_DSCP_MASK 0xfc
457 #define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */
458 #define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */
459 #define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */
460 #define IP_IS_FRAGMENT(ip_frag_off) \
461 ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK))
463 #define IP_HEADER_LEN 20
469 ovs_be16 ip_frag_off
;
473 ovs_16aligned_be32 ip_src
;
474 ovs_16aligned_be32 ip_dst
;
476 BUILD_ASSERT_DECL(IP_HEADER_LEN
== sizeof(struct ip_header
));
478 #define ICMP_HEADER_LEN 8
492 ovs_16aligned_be32 gateway
;
494 uint8_t icmp_data
[0];
496 BUILD_ASSERT_DECL(ICMP_HEADER_LEN
== sizeof(struct icmp_header
));
498 #define SCTP_HEADER_LEN 12
505 BUILD_ASSERT_DECL(SCTP_HEADER_LEN
== sizeof(struct sctp_header
));
507 #define UDP_HEADER_LEN 8
514 BUILD_ASSERT_DECL(UDP_HEADER_LEN
== sizeof(struct udp_header
));
516 #define TCP_FIN 0x001
517 #define TCP_SYN 0x002
518 #define TCP_RST 0x004
519 #define TCP_PSH 0x008
520 #define TCP_ACK 0x010
521 #define TCP_URG 0x020
522 #define TCP_ECE 0x040
523 #define TCP_CWR 0x080
526 #define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
527 #define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff)
528 #define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12)
530 #define TCP_HEADER_LEN 20
534 ovs_16aligned_be32 tcp_seq
;
535 ovs_16aligned_be32 tcp_ack
;
541 BUILD_ASSERT_DECL(TCP_HEADER_LEN
== sizeof(struct tcp_header
));
543 #define ARP_HRD_ETHERNET 1
544 #define ARP_PRO_IP 0x0800
545 #define ARP_OP_REQUEST 1
546 #define ARP_OP_REPLY 2
547 #define ARP_OP_RARP 3
549 #define ARP_ETH_HEADER_LEN 28
550 struct arp_eth_header
{
551 /* Generic members. */
552 ovs_be16 ar_hrd
; /* Hardware type. */
553 ovs_be16 ar_pro
; /* Protocol type. */
554 uint8_t ar_hln
; /* Hardware address length. */
555 uint8_t ar_pln
; /* Protocol address length. */
556 ovs_be16 ar_op
; /* Opcode. */
558 /* Ethernet+IPv4 specific members. */
559 uint8_t ar_sha
[ETH_ADDR_LEN
]; /* Sender hardware address. */
560 ovs_16aligned_be32 ar_spa
; /* Sender protocol address. */
561 uint8_t ar_tha
[ETH_ADDR_LEN
]; /* Target hardware address. */
562 ovs_16aligned_be32 ar_tpa
; /* Target protocol address. */
564 BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN
== sizeof(struct arp_eth_header
));
566 /* Like struct in6_addr, but whereas that struct requires 32-bit alignment on
567 * most implementations, this one only requires 16-bit alignment. */
568 union ovs_16aligned_in6_addr
{
570 ovs_16aligned_be32 be32
[4];
573 /* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this
574 * one only requires 16-bit alignment. */
575 struct ovs_16aligned_ip6_hdr
{
577 struct ovs_16aligned_ip6_hdrctl
{
578 ovs_16aligned_be32 ip6_un1_flow
;
579 ovs_be16 ip6_un1_plen
;
581 uint8_t ip6_un1_hlim
;
585 union ovs_16aligned_in6_addr ip6_src
;
586 union ovs_16aligned_in6_addr ip6_dst
;
589 /* Like struct in6_frag, but whereas that struct requires 32-bit alignment,
590 * this one only requires 16-bit alignment. */
591 struct ovs_16aligned_ip6_frag
{
593 uint8_t ip6f_reserved
;
595 ovs_16aligned_be32 ip6f_ident
;
598 /* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
599 #define IPV6_LABEL_MASK 0x000fffff
603 * char *string = "1 ::1 2";
604 * char ipv6_s[IPV6_SCAN_LEN + 1];
605 * struct in6_addr ipv6;
607 * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b)
608 * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
612 #define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]"
613 #define IPV6_SCAN_LEN 46
615 extern const struct in6_addr in6addr_exact
;
616 #define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
617 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
619 static inline bool ipv6_addr_equals(const struct in6_addr
*a
,
620 const struct in6_addr
*b
)
622 #ifdef IN6_ARE_ADDR_EQUAL
623 return IN6_ARE_ADDR_EQUAL(a
, b
);
625 return !memcmp(a
, b
, sizeof(*a
));
629 static inline bool ipv6_mask_is_any(const struct in6_addr
*mask
) {
630 return ipv6_addr_equals(mask
, &in6addr_any
);
633 static inline bool ipv6_mask_is_exact(const struct in6_addr
*mask
) {
634 return ipv6_addr_equals(mask
, &in6addr_exact
);
637 static inline bool dl_type_is_ip_any(ovs_be16 dl_type
)
639 return dl_type
== htons(ETH_TYPE_IP
)
640 || dl_type
== htons(ETH_TYPE_IPV6
);
643 static inline bool is_ip_any(const struct flow
*flow
)
645 return dl_type_is_ip_any(flow
->dl_type
);
648 static inline bool is_icmpv4(const struct flow
*flow
)
650 return (flow
->dl_type
== htons(ETH_TYPE_IP
)
651 && flow
->nw_proto
== IPPROTO_ICMP
);
654 static inline bool is_icmpv6(const struct flow
*flow
)
656 return (flow
->dl_type
== htons(ETH_TYPE_IPV6
)
657 && flow
->nw_proto
== IPPROTO_ICMPV6
);
660 void format_ipv6_addr(char *addr_str
, const struct in6_addr
*addr
);
661 void print_ipv6_addr(struct ds
*string
, const struct in6_addr
*addr
);
662 void print_ipv6_masked(struct ds
*string
, const struct in6_addr
*addr
,
663 const struct in6_addr
*mask
);
664 struct in6_addr
ipv6_addr_bitand(const struct in6_addr
*src
,
665 const struct in6_addr
*mask
);
666 struct in6_addr
ipv6_create_mask(int mask
);
667 int ipv6_count_cidr_bits(const struct in6_addr
*netmask
);
668 bool ipv6_is_cidr(const struct in6_addr
*netmask
);
670 void *eth_compose(struct ofpbuf
*, const uint8_t eth_dst
[ETH_ADDR_LEN
],
671 const uint8_t eth_src
[ETH_ADDR_LEN
], uint16_t eth_type
,
673 void *snap_compose(struct ofpbuf
*, const uint8_t eth_dst
[ETH_ADDR_LEN
],
674 const uint8_t eth_src
[ETH_ADDR_LEN
],
675 unsigned int oui
, uint16_t snap_type
, size_t size
);
676 void packet_set_ipv4(struct ofpbuf
*, ovs_be32 src
, ovs_be32 dst
, uint8_t tos
,
678 void packet_set_ipv6(struct ofpbuf
*, uint8_t proto
, const ovs_be32 src
[4],
679 const ovs_be32 dst
[4], uint8_t tc
,
680 ovs_be32 fl
, uint8_t hlmit
);
681 void packet_set_tcp_port(struct ofpbuf
*, ovs_be16 src
, ovs_be16 dst
);
682 void packet_set_udp_port(struct ofpbuf
*, ovs_be16 src
, ovs_be16 dst
);
683 void packet_set_sctp_port(struct ofpbuf
*, ovs_be16 src
, ovs_be16 dst
);
685 void packet_format_tcp_flags(struct ds
*, uint16_t);
686 const char *packet_tcp_flag_to_string(uint32_t flag
);
688 #endif /* packets.h */